Middle books in trilogies are tricky, but this taut science-fiction thriller pulls it off with panache.

The mysterious teenage girl Lah Lia keeps reappearing at pivotal moments of Tucker Feye’s chaotic adventures across time; now, following her own journey through the “disko” portals sheds clarity upon the various rival factions contending through the forthcoming epochs. From her pampered childhood, raised as a sacrifice, to the end of human history, Lia witnesses the early days of the Boggsian technological cult and their transcendence into the spectral tourist Klaatu; the heyday of digitocratic Medicant healers and their persecution at the hands of the fanatically anti-numerate Lah Sept; and the rebellion of the ruthless Yar women against the corrupt priests of her own time. Lia matures from a clever but passive observer to a tough-minded, compassionate and principled actor, determined to take charge of her own life—even if that means rewriting the past. While by no means a stand-alone, the narrative intersperses chapters recounting Tucker’s interrogation by Cold War–era Arctic explorers to recap important details and ground the more exotic future scenarios. This device also drives the plot, as the two protagonists strive independently to reconnect. When they meet again in the final pages, it is clear that the past is beginning to unravel, and all history is about to break loose.

Clare’s (Ghosts of the Shadow Market, 2019, etc.) latest is set in the Shadowhunter world in the 20th century’s first decade (with frequent flashbacks to the previous one).

Teenage offspring of the Herondales, Carstairs, Fairchilds, and other angel-descended Nephilim continue their families’ demon-fighting ways amid a round of elegant London balls, soirees, salons, picnics, and romantic intrigues. James Herondale, 17-year-old son of Will and Tessa, finds himself and his “perfectly lethal dimple” hung up between two stunning new arrivals: Cordelia Carstairs, red-haired Persian/British wielder of a fabled magic sword, and Grace Blackthorn, an emotionally damaged but (literally, as the author unsubtly telegraphs) spellbinding friend from childhood. Meanwhile, a sudden outbreak of demonic attacks that leave more and more Shadowhunters felled by a mysterious slow poison plunges James and a cohort of allies into frantic searches for both a cause and an antidote. Ichor-splashed encounters with ravening boojums and even one of hell’s own princes ensue—all leading to final hints of a devastating scheme to destroy the Nephilim in which James himself is slated to play a central role. Characters have a range of skin tones, but ethnic diversity adds no texture to the portrayals; there is a lesbian cousin who wears traditionally male clothing and two young gay men (one tortured, the other less so).

The independent teenager makes Jameson laugh, but she lacks the education and demeanor people expect in a queen. Her friend Delia Grace has more knowledge of history and languages but is shunned due to her illegitimate birth. Hollis gets caught up in a whirl of social activity, especially following an Isolten royal visit. There has been bad blood between the two countries, not fully explained here, and when an exiled Isolten family also comes to court, Jameson generously allows them to stay. Hollis relies on the family to teach her about Isolten customs and secretly falls in love with Silas, the oldest son, even though a relationship with him would mean relinquishing Jameson and the throne. When Hollis learns of political machinations that will affect her future in ways that she abhors, she faces a difficult decision. Romance readers will enjoy the usual descriptions of dresses, jewelry, young love, and discreet kisses, although many characters remain cardboard figures. While the violent climax may be upsetting, the book ends on a hopeful note. Themes related to immigration and young women’s taking charge of their lives don’t quite lift this awkwardly written volume above other royal romances. There are prejudicial references to Romani people, and whiteness is situated as the norm.

Skip this uninspired entry into the world of medieval love and court intrigue.
(Historical romance. 13-16)